Compact and rugged portable data logger has an easy to-read screen display and TFT LCD, and is visible even outdoors. The unit has 16 MB internal memory as well as capacity for external storage. The product acquires large amounts of analog input data with measurement intervals from 100 ms up to 1 hour. The user can set temperature and voltage independently for each channel. In addition, alarm summaries, log displays and review functions can be retained and displayed. Designed for applications such as plant maintenance, environmental testing and process systems.